Rigid Air Barrier (RAB® ) Board is a pre-sealed, cost effective rigid air barrier for use in medium to high-rise construction.



It is designed for use in specific engineering design projects exposed to high wind pressures.

Key Features and Benefits

Provides excellent temporary weather protection before the final cladding is installed.
Provides a drainage plane for cavity construction.
Pre-sealed on the face and edges.
Allows vapour permeability and resist moisture penetration.
Board warranty of 15 years.


6mm thick x 2450 or 3000mm long x1200mm wide

Fire Resistance Rating

This product can be used in a fire rated system also classified as a Non-Combustible material, please refer to James Hardie Fire and Acoustic Design Manual for further information.

Bracing Application

This product is suitable for structural bracing applications, please refer to James Hardie Bracing Design Manual for further information.